You are part of a police unit that has found a powder in a suspect's home. You think it might be a new drug called XYZ. XYZ is an ionic compound that dissolves in water. However, what you think might be a drug may just be salt. Unfortunately there seems to be iron fillings and sand mixed in with the white powder. Your job is to isolate the white powder before sending it to the police lab to be tested to determine if it is salt or XYZ. Give step by step directions on exactly how you will separate your mixture of white powder, iron fillings, and sand.

Answer:

B. An Iron Bar place in a room becomes cooler than its surroundings.

Hi there!

Recall the following:

[tex]C = \frac{Q}{V}[/tex]

C = Capacitance (F)
Q = Charge (C)
V = Potential difference (V)

The equation for the capacitance of a parallel-plate capacitor:

[tex]C = \frac{\epsilon_0 A}{d}[/tex]

C = Capacitance (F)
ε₀ = Permittivity of Free Space

A = Area of plates (m²)
d = distance between plates (m)

If the distance is halved, the capacitance will DOUBLE since there is an inverse relationship between capacitance and distance.

Thus, something has to change in regards to the charge or voltage for it to match the doubled capacitance.

Since the capacitor is ISOLATED, it is not connected to a battery, so the voltage is NOT maintained constant. The VOLTAGE will consequentially be changed, while the electric field will be unchanged.

Recall the equation for potential difference:

[tex]V = Ed[/tex]

If the distance is halved, the voltage will be halved. This is mirrored by the doubled capacitance. Thus, the electric field will remain the SAME.

Answer:

D. Homeostasis does not aid in getting rid of cellular

=======================================

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(angle) = magnitude/resultant

magnitude = resultant*cos(angle)

magnitude = 10*cos(60)

magnitude = 10*0.5

magnitude = 5 newtons

The diagram is below.

Answer:

The oxygen side of a water molecule is slightly negative.

Answer:

True

Explanation:

All waves have frequencies.

Answer:

Well the answer is TRUE... AND IM JUST WRITING THIS TO MAKE THE ANSWER LONGER

Answer:

When a capacitor is fully charged, no current flows in the circuit. This is because the potential difference across the capacitor is equal to the voltage source. (i.e), the charging current drops to zero, such that capacitor voltage = source voltage.

Explanation:

Hope this helps

There was no oxygen and layer of ozone in the atmosphere of earth billions of year ago.

The geologic time scale is a “calendar” that show events that occur in Earth history. It is used by geologists and other Earth scientists in order to describe the timing and relationships of events in geologic history.

Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon as reliable clocks in order to date ancient events.

The early Earth had no ozone layer and no free oxygen. Without an oxygen atmosphere very few things could live on the early Earth which did not need oxygen for their survival.

Learn more about atmosphere here: https://brainly.com/question/24925283

Answer:

B) minerals .Because they mainly consist of metals

Answer:

False I think, not 100% sure

No, knowing all the forces is not enough to know the direction of motion.

The second Newton's law states that:

F = m*a

This says "force equals mass times acceleration".

Where acceleration is the rate of change of the speed. From that equation, we conclude that the acceleration is in the same direction that the net force.

So, if we know all the forces acting on an object, we know the net force acting on it, then we know the direction of the acceleration.

No, the object does not need to move in the same direction than its acceleration, the direction of motion will also depend on the initial velocity of the object (if it is initially moving with constant speed).

If we don't know that, we can't find the direction of motion.

An example of this can be a car going at 100km/h east-wise.

Then we apply a net force due west, then we have an acceleration due west. But as the initial direction of motion was east, the car will still move to the east, but the velocity will decrease gradually.

So as you can see in that example, we need to know the initial velocity to know the direction in which the object is moving.

If you want to know more about acceleration, you can read:

https://brainly.com/question/605631

The lighting was struck at a distance of 2040 m or 2.04 Km away.

The speed of a body can be defined as the distance traveled by the body in a definite time. The speed is also a scalar quantity because it does not have any direction, only magnitude.

The speed of a body can be calculated from the ratio of the distance covered by the body to the time taken to travel that distance.

The formula for the speed of an object can be written as follows:

Speed = distance/time taken

Distance = Speed×time

Given, the speed of the sound = 340 m/s

The total time taken by the sound = 6 sec

The speed of light is much greater than the speed of light Therefore we heard the sound later when the lightning struck.

Distance traveled by the sound  = 340 × 6 = 2040 m = 2.04 Km

Therefore, the lightning strike was 2.04 km away.

Learn more about the speed, here:

brainly.com/question/12322912

#SPJ2

Answer:

knot...

.....

.....

.....

Answer:

Fleming's Left Hand Rule states that if we arrange our thumb, forefinger and middle finger of the left hand perpendicular to each other, then the thumb points towards the direction of the magnetic force, the forefinger points towards the direction of the magnetic field and the middle finger points towards the direction ...

Explanation:

Fleming's right-hand rule gives which direction the current flows. The right hand is held with the thumb, index finger and middle finger mutually perpendicular to each other (at right angles), as shown in the diagram. The thumb is pointed in the direction of the motion of the conductor relative to the magnetic field.

Answer:

It doesn't give light

Explanation:

No Flowing of electricity

Answer: true

Explanation: this is were it is located

Answer:

Polaris is the north star and observers in the northern hemisphere can see this star on a clear night.

The tangential velocity of the ball is 0.63 m/s.

Tangential speed is the linear component of the speed of any object moving along a circular path.

v = ωr

where;

At a given radius of the circle = 0.3 m

Let the number of revolution per min = 20 rev/min

[tex]\omega = 20 \frac{rev}{\min} \times \frac{2\pi \ rad}{1 \ rev} \times \frac{1 \min}{60 \ s} = 2.1 \ rad/s[/tex]

v = ωr

v = 2.1 x 0.3

v = 0.63 m/s

Thus, the tangential velocity of the ball is 0.63 m/s.

Learn more about tangential velocity here: https://brainly.com/question/25780931

Answer:

A line of symmetry is a line that separates a shape into two identical halves.
Rotational symmetry is the same thing except when you rotate the object, it has to have the exact same line of symmetry.

Hope this helps!!!

These are called the north and south poles. When they are put together, due to the amount of opposing electrons and moles in the force, one repels the other while the other is magnetically attracted by the force because of the strength.

Answer:

C = 5/9 x (F-32)

Explanation:

Formula for converting Fahrenheit (F) to Celsius (C):

C = 5/9 x (F-32)

The notation C represents the temperature in Celsius, and F is the temperature in Fahrenheit. After you know the formula, it is easy to convert Fahrenheit to Celsius with these three steps.

1.Subtract 32 from the Fahrenheit temperature.

2.Multiply this number by five.

3.Divide the result by nine.

For example, suppose the temperature is 98.6 degrees Fahrenheit and you want to know what the figure would be in Celsius. Use the above three steps:

C = 5/9 x (F - 32)

C = 5/9 x (98.6 - 32)

C = 5/9 x (66.6)

C = 37 C

Answer:

True

Explanation:

It is because the theory states that heat has a water-repellent fluid that allows it to move around in the air and water itself.

200 m/s speed. (Now it lets me lol)

Answer:

ikd

Explanation:

I don't get what your asking pls make it more clear

Answer:

they are gas giants. they are much much more bigger then terrestrial

Dark soil

The more light the object absorbs, the more heat absorbed since light is energy. If you consider it a colour, black absorbs the most heat. A black object absorbs all wavelengths of light and reflects none. Objects that are white, on the other hand, reflect all wavelengths of light and therefore absorb the least heat.

Answer: its gonna be the dark soil

Explanation: its gonna be the dark soil because darker colors absorb more heat and light because its a darker area.

hope i helped <3

Answer:

Explanation:

So:

(

5

⋅

1

)

+

(

1

⋅

−

4

)

=

(

5

+

1

)

v

5

−

4

=

6

v

v

=

1

6

=

0.17

m

s